/* 暗色/亮色模式切换样式 */ 
.light-mode {
    --theme-bg-color: rgb(255 255 255 / 31%);
    --theme-color: #3c3a3a;
    --inactive-color: #333333;
    --button-inactive: #3c3a3a;
    --search-bg: rgb(255 255 255 / 31%);
    --dropdown-bg: #f7f7f7;
    --overlay-bg: rgb(255 255 255 / 30%);
    --dropdown-hover: rgb(236 236 236);
    --border-color: rgb(255 255 255 / 35%);
    --popup-bg: rgb(255 255 255);
    --hover-menu-bg: rgba(255 255 255 / 35%);
    --scrollbar-bg: rgb(255 253 253 / 57%);
    --content-title-color: --theme-color;
  }
  
  
  @media screen and (max-width: 480px) {
    body {
      padding: 0.8em;
    }
  }
  
  .video-bg {
    position: fixed;
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
  }
  .video-bg video {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
       object-fit: cover;
  }
  
  img {
    max-width: 100%;
  }
  
  .dark-light {
    position: fixed;
    bottom: 50px;
    right: 30px;
    background-color: var(--dropdown-bg);
    box-shadow: -1px 3px 8px -1px rgba(0, 0, 0, 0.2);
    padding: 8px;
    border-radius: 50%;
    z-index: 3;
    cursor: pointer;
  }
  .dark-light svg {
    width: 24px;
    flex-shrink: 0;
    fill: #ffce45;
    stroke: #ffce45;
    transition: 0.5s;
  }
  
  .light-mode .dark-light svg {
    fill: transparent;
    stroke: var(--theme-color);
  }
  .light-mode .profile-img {
    border: 2px solid var(--theme-bg-color);
  }
  .light-mode .content-section ul {
    background-color: var(--theme-bg-color);
  }
  .light-mode .pop-up__title {
    border-color: var(--theme-color);
  }
  .light-mode .dropdown.is-active ul {
    background-color: rgba(255, 255, 255, 0.94);
  }
  
  body.light-mode:before,
  body.light-mode .video-bg:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(255, 255, 255, 0.45) 100%);
    -webkit-backdrop-filter: saturate(3);
            backdrop-filter: saturate(3);
  }
  .profile-img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    -o-object-fit: cover;
       object-fit: cover;
    border: 2px solid var(--theme-color);
    margin-left: 22px;
  }
